Melt butter in a small saucepan. Stir in cracker crumbs, reserving 1 tablespoon for garnish. Pat crumbs on bottom of buttered 8x8 inch baking dish, set aside. In a medium bowl combine pie filling, condensed milk and lemon juice. Mix until smooth, spread into prepared pan. Top with whipped topping and reserved crumbs. Freeze 3 hours.

-- Submitted by: Eileen Martinsen